Even dedicated Tablet PC users have to admit that the pen-based portable "revolution" Bill Gates announced several years ago has been slow in coming. Newer, more affordable Tablet/notebook convertibles and last year's upgrade of the Tablet OS have rekindled interest in the platform, to be sure, but many business users are still reluctant to pick up the stylus, so to speak. For them, we offer up this countdown of what they are missing, ten solid programs Tablet veterans use regularly that simply work better with a pen than with a keyboard.